One time I was so sleepy and tired after finishing a project. I remember locking the door then going to sleep. When I woke up the next day I asked my brother how did he come in since the lock I set cant be opened from the outside. He said that i opened the door for him but I have no recollection of me doing that at all.
Forgetting things when you're sleepy is possible
Well I get that, I've forgotten little things like that as well. Its especially easy to forget things you've done when you're sleepy. But certain things give you a rush and I have a hard time believing that you can forget what is being implied he that forgot when it appears to be a big deal to him to conceal his feelings for his brother in the first place. Normally you'd be worried about self preservation and that fear wakes you up. Im just saying...its certainly not the most plausible. If its trying to imply that they had sex idk if I can believe it at all, but maybe he'd forget something lesser that lasted only a short amount of time.
Like I said, easily forgettable things are different. When you're in control of your actions like walking to bed its easy to forget. Sometimes the person I was dating would wake me up in the morning to get a hug before they left the house and I was so sleepy I'd fall right back asleep and forget it happened. So if it was a kiss I could buy the situation more easily but if it was sex for example, you don't just have a session of that half asleep. When you're sleepy enough to forget walking to bed and stuff, the people who saw you do it can report how sleepy and out of it you looked. I've done stuff like that and you're really slow and sluggish so I have a hard time believing he had sex and forgot it in that case, you have to be really active in that....or if his brother basically did anything sexual with him while he was that out of it....then its creepy and gross all on its own. But Im thinking maybe they didn't have sex but something else happened. Still its not okay to do anything like that with somebody that is that out of it....
There was time when I went to sleep and told my family to wake me up at midnight to see the firework. Next morning I woke up and complaining them abt not keeping their promise, I was so angry till I saw a video of me standing under the firework while looking souless
Guess there're people who can't remember anything when falling in deep sleep like me now and then:))
Isn't that more like skeepwalking? (≧∀≦)
Not saying it's the case here or anything, but it IS possible to have sex while asleep if you have a condition called "sexsomnia" (and, no, I'm not kidding).
See here:
https://en.wikipedia.org/wiki/Sleep_sex
What even....how can you be so sleepy that you forget things like that.....